Electrically controlled lock system for revolving doors



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T. M. HAGENBOOK May 16, 1944. 2,348,900 ELECTRICALLY CONTROLLED LOCK SYSTEM FOR REvpLvING DOORS Filed Jan. 24,1941

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fwd 9Tb Elli alll l 0 ,a a 4 W MW W 5 7 w 4 Patented May 16, 1944 ELECTRIOALLY CONTROLLED LOCK SYSTEM FOR REVOLVING DOORS Thurloe M. Hagenbook, Evansville, Ind., assignor to International Steel Company, Evansville, Ind., a corporation of Indiana Application January 24, 1941, Serial No. 375,835

4 Claims.

My invention relates broadly to revolving doors and more particularly to an electrically operated lock system for revolving doors.

One of the objects of my invention is to provide an electric lock system for revolving doors in which the revolving doors may be mechanically latched in a position closing the entrance way and the mechanical latch disengaged by electric control means from remote positions at either side of the entrance way when it is desired that the revolving door be restored to operation.

Another object of my invention is to provide an electrically actuated lock system for revolving doors in which mechanical latches connected with opposite wings of the revolving door may be disengaged by the operation of electromagnetic operating means to restore the revolving door to normal operating condition.

Still another object of my invention is to provide an arrangement of electromagnetic actuating mechanism for releasing mechanically engaged latches on the wings of a revolving door system for restoring the revolving door to normal operating condition.

A further object of my invention is to provide an arrangement of remotely controlled electric release system for mechanically locked revolving doors in which the release mechanism is substantially tamper-proof and can only be operated by the proper key intended for the lock system.

A still further object of my invention is to provide a key actuated electric circuit controller for controlling an electromagnetically actuated release mechanism for revolving doors in which the key actuated electric circuit controller can only be operated by a proper key, making operation by burglary substantially impossible.

Another object of my invention is to provide a construction of mechanical engaging means for the wings of a, revolving door system in which retractible bolt members are mounted adjacent the upper extremities of certain of the door wings in such position as to engage a mechanical latch in the ceiling structure of the revolving door drum where the bolt member is so mounted that removal thereof from therevolving door wing by burglary is substantially impossible thereby insuring the safety of the revolving door for protecting an entrance way.

Still another object of my invention is to provide an arrangement of electrically operated locked release mechanism for revolving doors which may be coordinated with auxiliary swinging doors adjacent the revolving door for effecting simultaneous electric release of both the swinging door and the revolving door.

Other and further objects of my invention are set forth more fully in the specification hereinafter following by reference to the accompanying drawings, in which:

Figure 1 is a top plan view of the ceiling structure of a revolving door showin the electrically operated lock system of my invention installed in position with certain parts broken away and illustrated in plan view andcertain parts illustrated in section for explaining the relationship of the elements ofthe revolving door system and electrically operated lock system; Fig. 2 is a fragmentary transverse sectional view taken on line 2-2 of Fig. 1 and illustrating the revolving door system and the electrically operated lock system for the revolving door with certain of the parts shown in elevation and certain of the parts broken away and illustrated in section; Fig. 3 is a. schematic wiring diagram of the electrically operated lock system for revolving doors arranged in accordance with my invention; Fig. 4 is a top plan view of one of thedoor Wing latch.- ing devices controlled by the electrically operated lock system; Fig. 5 is an enlarged fragmentary sectional view showing the wing latching device in position just after disengagement of the look ing device associated with one of the door wings and just prior to full release of the revolving door wing; Fig. 6 is a fragmentary sectional view showing the arrangement of latching mechanism employed on adjacent sides of twooi the door wings of the revolving door structure and illustrating at transverse section the feathering strip between the peripheral edge of the drum of the revolving dor and the revolving wing, the view being taken on line 5-4 of Fig. 2; Fig.7 7 is an elevational view of the revolving door wing latching mechanism with certain parts of the latch illustrated in section and showing the door wing locked against rotation; Fig. 8 is a vertical sectional View taken on line 8-8 of Fig. 7, with the spring actuated latching device shown in engaged position; Fig. 9 is a. view similar to Fig; 8 except that the spring actuated latching device is illustrated in disengaged posit-ion, the door wing being free to revolve; Fig. 10 is a rear elevational view of the lockingbolt member employed in association with two of the door wings; Fig. 11 is a top plan view of the locking bolt member shown in Fig. 10; Fig. 12 is a front elevational view of the guide member which is attachable to the door wing in a position wholly covered by the locking bolt member; Fig. 13 is a top plan view of the guide member shown tric circuit closer located at a control position 1 on either or both sides of the revolving door structure for controlling the operation of the electrically operated lock system; Fig. 17 is a vertical sectional view taken substantially on line ll-l'l of Fig. 16 with certain of the parts illustrated in elevation; Fig. 18 is a vertical sectional view taken on line l8l 8 of Fig. 17 showing the circuit closer in open circuit position; Fig. 19 is a view similar to Fig. 18 but showing the lock mechanism moved to a position for closing the electrical circuit through the electrically operated lock system; Fig. 20 is a transverse sectional view taken substantially on line 2020 of Fig. 16; Fig. 21 is a view taken substantially on line 2 l2l of Fig. 1'7 but illustrating the lock per se and certain associated parts in plan; Fig. 22 is a. perspective view of the vertically slidable actuator employed in the circuit closer of Figs. 16-21; Fig. 23 is a perspective view of the angularly shiftable actuator which is operated from the lock system to impart movement to the vertically slidable actuator of Fig. 22 for closing or opening the circuit to the electrically operated lock system; and Fig. 24 is a rear perspective view of the frame or casing which encloses the parts of the electricall operated lock system.

My invention is directed to an electric lock system for revolving doors in which the electric lock is remotely controlled from either side of the door. The controlling lock is so constructed that it is not possible to remove the look without the required key. I provide a cam type of lock, in which theactuator is extended into the form of a cam which normally prevents the Withdrawal of the cylindrical lock and only permits withdrawal of the cylindrical look when the proper key is inserted into the lock and the cam shifted one quarter revolution for withdrawing the plate and cylinder of the cylindrical lock when necessary, for the purpose of repair and/or replacement. This feature insures the reliability ofthe lock system and avoids entry of the revolving door through burglary.

The actuator whichis formed integrally with the angularly shiftable cam extends through a slot in a retractible member, which functions as an electric circuit closer for cntr011ing the magnetic means which functions the unlocking mechanism for releasing the revolving doors. In addition, the circuit controller may also control the unlocking of magnetic means which controls the functioning of swinging doors, which in some installations are located on opposite sides of the revolving door. The magnetic means consist of a solenoid mounted above the ceiling structure of the revolving door drum, in a position in which transverse movement may be imparted to a pair of armatures, each of which is connected with wires which connect to retractible spring actuated latching devices located above the ceiling structure, in positions in which it is normally desired to lock the revolving door wings, and permitting a. bolt manually projectible from theupper ends of certain of the Wings of the revolving door to be released, in order that the wings may revolve freely. The swinging doors may have magnetic means similarly arranged except that individual magnetic means are mounted within the transom bar. The bolt members are headed in such a manner that the retractible device may engage beneath the head of theibol't member to prevent withdrawal of the bolt member, thereby insuring a solid lock between the door wings and the ceiling structure of the revolving door drum. So long as the revolving door is in locked position, it is impossible to unlock the door without retracting the retractible device above the ceiling structure of the revolving door drum.

Special care is taken to so mount the guide for the bolt member with respect to the upper portion of the frame of certain of the revolving door wings, that the attaching screws are always entirely covered by the structure of the bolt member. The bolt member either in its retracted or projected position, so covers theattaching screws, that these screws cannotbe removed so that the guide for the bolt member remains permanently inposition.

The electrically operated circuit controllers may be mounted in remote positionsv on the wall structures at the front or rear of the revolving door or in both positions and the control circuits arranged in parallel so that the magnetically controlled release mechanism may be operated from one or more remote positions.

Referring to the drawings in detail, reference character I designates the drum of a revolving door terminating at one side'in wall structure 2 and at the opposite side in wall structure 3. The ceiling structure of the revolving-door drum is indicated at 4 beneath which the wings 5. B, I and 8 carried by parallel shaft .9 of the revolving door are adapted to operate. The electrically operated lock system for the remote control of.the revolving door includes an electrically operated lock mechanism indicated at l0 and located in wall structure 3 for the remote control of the revolving door. A similar remotely controlled lock control mechanism is indicated at-l l mount ed in wall structure 2. V

The electrically actuated lock control mechanism is indicated at l2 mounted above the ceiling structure 4 and includes an electromagnetically controlled actuating mechanism l4 supported by the ceiling structure 4 in a position passing through a center line which includes the axis of the central shaft 9 f the revolving door structure and a pair of spaced spring-actuated latching devices indicated at l3 and I3 disposed in positions above the door wings where the door wings occupy quarter positions substantially in alignment with the openings through the;revolving door drum I and substantially closingpassage through the revolving door entrance. The electromagnetically controlled actuating mecha nism 14 includes a horizontally extending slotted tubular core structure l5. Theslot which extends longitudinally through the tubular core structurev I5 is indicated at It preventing the establishment of a-closed metallic circuit within the densest portion of the magnetic field and thus avoiding eddy current losses. The electromagnetic actuating winding is indicated at H wound upon tubular core structure IS, A pair of magnetic'end bracket members 18 and I9. are provided for supporting the-tubular core structure l5. Brackets I8 and I9 are slotted at l8a and I911 adjacent the apertures therein through which the tubular core structure 15 passes. The magnetic end bracket members l8 and is are shaped in the form of angles and have their supporting bases mounted on magnetic plate 2!] with gap 2| disposed therebetween. I provide a pair of slidable cylindrical block-like armature members 22 and 22' which are slidable through the aligned apertures in the end brackets i8 and I9 and through the tubular core structure [5. The armature members 22 and 22' are each pro? vided with an annular sleeve-like head 23 .and .23 respectively. A cable 24 is secured to the head 23 of armature member 22 and extends longitudinally therefrom while cable 2:3 is secured to armature 22' through head 23' thereof and extends longitudinally therefrom in the op-, posite direction. The armature members 22 and 22' are slidable within the tubular core structure I and are adapted to be magnetically attracted for movement from the demagnetized position illustrated in Fig. 2 where the armature members 22 and 22' are shown separated at their inner ends by a gap 22a to a position in which the inner ends of the armature members 22 and 22' substantially abut. The simultaneous inward movement of both armature members 22 and 22' is limited byabutment of the annular sleeve-like members 23 and 23 with the end brackets i8 and I9 respectively. The outward movement of armature members 22 and 22' is limited by abutment with stops 25 and 25 re.- spectively, the stops 25 and 25 being. supported on brackets l3 and iii in the path of movement of the annular sleeve-like heads 23 and 2 on armature members 22 and 22 respectively.

The latching devices it and i3 are eachsirni lar in construction and corresponding parts have been indicated by similar primed reference characters. Referring particularly to Fig. 4, the latching device I3 is shown mounted on the ceiling structure t by means of supporting plate 26. Supporting plate 25 is apertured at 2?.for the passage of the locking bolt 38 which will bl more fully described hereinafter. The supporting plate 25 has an upstanding lug 28 on the end thereof which is adjacent the electromag netic actuating mechanism. The plate ifi is secured to the ceiling structure 8 by suitable means 29. A laterally extending offset strap 30 is carried by plate 26 and serves as a means for confining the longitudinal. movement of .the slidable angle member 3!. An upstanding lug 32 is provided on the slidable angle member 3| for enabling successive projecting and retracting forces to be applied to the slidable angle member 3!; A rod member 33 passes through the upstanding lug 32 on slidable angle member 3l'and through the upstanding lug 28 on supporting plate 26 and terminates inscrew threads 33a on the remote end and an eyelet 33b on the opposite end. A nut til engages the screw threads 33a for confining the rod member 33 with respect to the'retractible and projectible slidable member 3%. An exp'ansible coil spring 35 is disposed over rod member 33 and between the upstanding lug is on plate 26 and upstanding lug 32 on slidable angle member 3! tending to continuously urge slidable angle member 31- into a projected or latching position.

The locking bolt 38 heretofore referred to is provided with a frusto-conical-shaped head 3'! with an annular groove 36 directly beneath the head. Both the frusto-con-ical shaped head 37 and the annular groove 35 coact with the slidable anglemember 3 [which functions asa latche ing device. That; is to say, slidable anglemember 3| is normally projected by spring intoa position partailly obstructing the aperture 2'1 in plate 26. When locking bolt 38 is forced upwardly against slidable angle member 3| the frusto-conical plunger head 31 operates as a cam to force slidable angle member 3! in a transverse direction against the action of coil spring 35. As locking bolt 38 continues to move upwardly the annular groove 35 therein becomes aligned with slidable angle .member 31 which drops off the frusto-conical shaped head 31 and engages beneath the head 3'! and latches in position with respect thereto. This interengagement accordingly locks the door wing with respect to the ceiling structure of the revolving door drum.

The ceiling structure 4 has the apertures 4a therein each lined with the tubular linings 4b to serve as a guide for the locking bolt. A locking bolt is carried by adjacent surfaces'oi two of the revolving door wings such as for example wings 6 and J. Each locking bolt assembly includes a hand grip member represented at 39 which is shaped as represented at 4% to form a hand grip to permit the locking bolt to be manually projected upwardly when the revolving door wing is moved to a position in which the locking bolt may enter ceiling structure A through lining 41).

Figs. 6-14 show more clearly the structure of the projectible and retractible bolt member and the parts have been indicated by primed characters in order to clearly show that the parts on door wing '1 correspond precisely with similar parts installed on door wing ii. The hand grip id on the manually movable portion 39' of looking bolt 38 entirely covers the guide rail 42 which .is secured by screws 45' to the door wing 1. The rail 42' is shaped to include a longitudinally extending groove 43' having countersunk recesses Mi which are chamfered at Ma to receive the .screws The guide rail 42' is substantially T-shaped and is enclosed and gripped by a complementary shaped grooved portion M of the hand grip in of locking bolt 39. A stop pin 4%) is disposed in the groove 43 of the T rail 42 in a position near the lower end of the guide rail. Stop pin 46' forms an abutment against the unauthorized removal of the locking bolt from the door wing after the door wing is assembled within the door drum. The locking bolt carries a complementary stop pin 47' which is aligned with the longitudinally extending groove 43' and abuts against stop pin 56' to obstruct'and prevent the removal of the locking bolt from the door wing. It will be understood that the locking bolt is initially assembled with respect to the guide rail 42' when the door is originally assembled beyond and removed from the ceiling structure of the revolving door drum by sliding the locking bolt vertically over the guide rail 52 and allowing the lockingbolt to gravitate to a position in which stop pin 4? abuts against stop pin :36. Fig. 9 indicates the condition in which the locking bolt is lowered from the aperture in the ceiling structure after disengagement of the latching mech-. anism with respect to the bolt member. Stop pin 47' .carried by the locking bolt is prevented from passing the stop pin 46 carried by the T rail 42' thereby preventing access to the heads of screws and obstructing unauthorized removal of the locking bolt, thereby preventing entry through the revolving door structure.

For the purpose of explaining the revolving door assembly in more detail, reference is made to Figs. 2 and 6 which illustrate the weathering strip support 49' carried by the peripheral edge of the frame structure of the revolving door wing illustrated at The weathering strip support 49' carries a flexible weathering strip 59' in the peripheral edge thereof, which coacts with the inner cylindrical wall of the revolving door drum to maintain a tight abutment connection between the peripheral edges of the revolving door wings and the inside surfaces of the revolving door drum at all times.

The electromagnetically actuated mechanism I4 is remotely controlled as heretofore explained from either of two positions under control of lock control mechanisms l and II, located in opposite wall structures, as illustrated. This lock control mechanism is built into a recess in the wall structure so that the lock is flushed with the wall surface. In Figs. 16-24, I have illustrated the manner in which the circuit control mechanism and lock actuator are mounted with respect to the recess 52 in the Wall structure 3. The frame structure for the circuit controlling mechanism is illustrated at 53, formed by a threefold section with a pair of lugs 53a and 5312 extending from the side walls and directed toward each other. The lugs 53a and 53b are diagonally disposed and form guide means for the slidable circuit controlling member 62, which will be hereinafter described more fully.

Recess 52 in the wall structure is countersunk at each of the positions in which the lugs 53a and 531) are located to receive these lugs and allow the frame structure 53 to fit snugly within the wall structure. The side portions of the frame structure 53 are interconnected by a yoke member 54 adjacent the top thereof and by transversely extending rod members 55 and 56, disposed intermediate the ends of the frame structure 53. Rod members 55 and 55 are so spaced from the plane of the lugs 53a and 53b that plate member 62 may be confined in a slidable path therebetween. The frame structure 53 carries at diametrically opposite positions 1 thereon the insulated mounting blocks 51 and 58, which respectively support contact members 59 and 80. The circuit connecting wires 6| terminate at contact members 59 and .69, as shown.

Contact members 59 and 60 are resilient striplike members which may be bridged by the short circuiting or bridging portion 63 of the slidable plate member 62. That is to say, in one limiting position illustrated in Figs. 16, 1'7 and 18, con

tactor 63 is displaced from connection with contact members 59 and 60, while in the opposite limiting position illustrated in Fig. 19, the short circuiting or bridging portion 63 shunts the contact members 59 and 60.

The plate member 62 is recessed, as indicated at 64, in a position in which projecting lug 61 on actuator plate 65 controlled by lock 65 may engage the opposite limiting walls of the recess 64 for shifting slidable plate 62 to either of the two limiting positions thereof. The actuator 56 is secured to the lock 65 by suitable pin means 68, passing through aperture 68a in plate 66. The lock controlled member 65a extends through slot 66a in plate 66 and insures angular movement of plate 66 under control of the key actuator 69 of lock 65.

The frame 53 is secured in position in recess 52 by means of screws 10. The escutcheon plate II is secured to the frame 53 by means of screws indicated at 12. Look 65 is secured against unauthorized removal by means of the lock securing ring 13 which embraces the cylindrical casing of the lock 65 as shown and also by engagement of plate 66 with transverse bar 89 which is secured at opposite ends between the side walls of frame 53. The escutcheon plate 1| and the lock 65 cannot be removed unless plate 66 is turned one-fourth turn to entirely clear the bar 80. The purpose of bar 80 is to prevent the removal of the escutcheon plate ll when screws 12 are removed. The only way to remove plate 1| would be to remove screws 12 and insert the key in the cylinder 69 and turn it so that plate 66 would clear the bar 80.

In Fig. 3 I have shown a schematic circuit diagram in which the lock control mechanism at l0 and II have the contacts thereof connected in parallel for controlling the electromagnetically operating mechanism from either of the two positions on the opposite walls 2 and 3 illustrated in Fig. 1. I have indicated the source of power supply for the lock operating system as connected to power supply circuit 15 leading to the primary winding of transformer 14. One side of power supply circuit 15 connects to one side of electromagnetic actuating winding l'l, and the other side of the power supply circuit 15 connects through contacts 18 of relay 19 to the opposite side of the actuating winding H. The relay 19 includes operating winding 16 and contactor 11 adapted to shunt contacts 18, thereby closing the circuit to the electromagnetic operating winding '11. The relay winding 16 is connected in circuit with the contacts 59 and of lock controlled mechanism It! which are in turn connected in parallel with contacts 59' and 60 of lock controlled mechanism If the key actuator of lock is functioned to move member 63 into shunt relation with contacts 59 and 60, relay winding 16 will be energized from the power source supplied through transformer 14, thereby moving contactor 11 to a position closing the circuit through contact 78 to electromagnetic actuating winding H which receives energy from power circuit 15 for unlatching the locking bolts through contacts 59 and 6|) or 59' and 60', thereby permitting contactor ll to be displaced from contact I8 under the action of spring 83. This operation opens the circuit to electromagnetic winding ll allowing latches 3| and 3| to move to positions partially closing apertures 21 and 21f preparatory to manual projection of the headed ends 31 and 31' of bolt members 38 and 38' through the ceiling structure 4 for engagement by the yieldable latch members 3| and 3|. After engagement of the grooves 36 and 36 the door wings are locked in position and it is impossible to again revolve the revolving door until at least one of the key actuators have been operated to electromagnetically retract the latching devices 3| and 3| after which the bolt members 38 and 38 gravitate by their own weight and effect disengagement of the revolving door wings from the ceiling structure, leaving the door wings free to revolve.

The locking bolts 38 each have such mass in the manual control hand grip portions 39 that these locking bolts will drop of their own weight under gravity action as soon as latching member 3| is withdrawn from engagement with groove 36 beneath head 31. The bolt members gravitate downwardly when released, thereby allowing the revolving door wing to rotate freely.

I have described my invention in certain of its preferred embodiments but I realize that modification and rearrangement of parts may be readily made and I intend no limitations upon my invention other than may be imposed by the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States is as follows:

1. A lock system for revolving doors comprising in combination with the wing and drum structure of a revolving door, projectible and retractible locking bolt members carried by certain of the wings of the revolving door, spring actuated latching devices carried by the drum structure in positions adapted to coact with the locking bolt members carried by the revolving door wings for effecting individual engagement with the locking bolt members when said locking bolt members are moved to projected positions, and electrically operated means disposed intermediate said spring actuated latching devices comprising an electromagnetic operating winding mounted in a substantially horizontal position with a substantially hollow magnetic core structure extending therethrough, a pair of core members slidably disposed in each end of said hollow core structure, and connections between the respective core members and the associated spring actuated latching devices for simultaneously tripping said spring actuated latching devices under magnetic control of said operating winding for releasing said locking bolt members for movement to retracted positions.

2. A lock system for revolving doors comprising in combination with the wing and drum structure of a revolving door, projectible and retractible locking bolt members carried by certain of the wings of the revolving door, spring actuated latching devices carried by the drum structure in positions adapted to coact with the locking bolt members carried by the revolving door wings for efiecting individual engagement with the locking bolt members when said locking bolt members are moved to projected positions, and electrically operated means disposed intermediate said spring actuated latching devices comprising an electromagnetic operating winding mounted in a substantially horizontal position with a substantially hollow magnetic core structure extending therethrough, a pair of core members slidably disposed in each end of said hollow core structure, connections between the respective core members and the associated spring actuated latching devices for simultaneously tripping said spring actuated latching devices under magnetic control of said operating winding for releasing said locking bolt members for movement to retracted positions, and remote control means for energizing said electromagnetic winding for disabling said spring actuated latching devices from a distant position.

3. A lock system for revolving doors comprising in combination with the wing and drum structure of a revolving door, projectible and retractible locking bolt members carried by certain of the wings of the revolving door, spring actuated latching devices carried by the drum structure in positions adapted to coact with the locking bolt members carried by the revolving door wings for efiecting individual engagement with the locking bolt members when said locking bolt members are moved to projected positions, and electrically operated means disposed intermediate said spring actuated latching devices comprising an electromagnetic operating winding mounted in a substantially horizontal position with a substantially hollow magnetic core structure extending therethrough, a pair of core members slidably disposed in each end of said hollow core structure, connections between the respective core members and the associated spring actuated latching devices for simultaneously tripping said spring actuated latching devices under magnetic control of said operating winding for releasing said locking bolt members for movement to retracted positions, and a plurality of spacially separated remote control devices for energizing said electromagnetic winding from separate positions for disabling said spring actuated latching devices from either of said separate positions.

4. A lock system for revolving doors comprising in combination with the wing and drum structure of a revolving door, projectible and retractible locking bolt members carried by certain of the wings of the revolving door, spring actuated latching devices carried by the drum structure in positions adapted to coact with the locking bolt members carried by the revolving door wings for effecting individual engagement with the locking bolt members when said locking bolt members are moved to projected positions, electrically operated means disposed intermediate said spring actuated latching devices comprising an electromagnetic operating winding mounted in a substantially horizontal position with a substantially hollow magnetic core structure extending therethrough, a pair of core members slidably disposed in each end of said hollow core structure, connections between the respective core members and the associated spring actuated latching devices for simultaneously tripping said spring actuated latching devices under magnetic control of said operating winding for releasing said locking bolt members for movement to retracted positions, and key actuated means remotely disposed with respect to said electrically operated means for controlling the excitation of said electromagnetic winding for disabling said spring actuated latching devices from a distant position.

THURLOE M. HAGENBOOK. 

